Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$ 1,571us-gaap_CurrentFederalTaxExpenseBenefit	$ 1,742us-gaap_CurrentFederalTaxExpenseBenefit	$ 148us-gaap_CurrentFederalTaxExpenseBenefit
State	390	515	131
Non-U.S	9,040us-gaap_CurrentForeignTaxExpenseBenefit	2,542us-gaap_CurrentForeignTaxExpenseBenefit	738us-gaap_CurrentForeignTaxExpenseBenefit
Current income tax provision	11,001us-gaap_CurrentIncomeTaxExpenseBenefit	4,799us-gaap_CurrentIncomeTaxExpenseBenefit	1,017us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
Federal	2,335	963	2,201
State	932	386	409
Non-U.S	(405)	3,067	4,218
Deferred income tax provision (benefit)	2,862us-gaap_DeferredIncomeTaxExpenseBenefit	4,416us-gaap_DeferredIncomeTaxExpenseBenefit	6,828us-gaap_DeferredIncomeTaxExpenseBenefit
Total	$ 13,863us-gaap_IncomeTaxExpenseBenefit	$ 9,215us-gaap_IncomeTaxExpenseBenefit	$ 7,845us-gaap_IncomeTaxExpenseBenefit

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